72 lines
4.2 KiB
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72 lines
4.2 KiB
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<!-- Common Lisp HyperSpec (TM), version 7.0 generated by Kent M. Pitman on Mon, 11-Apr-2005 2:31am EDT -->
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<TITLE>CLHS: Macro LAMBDA</TITLE>
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<A NAME="lambda"><I>Macro</I> <B>LAMBDA</B></A> <P>
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<P><B>Syntax:</B><P>
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<P>
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<B>lambda</B> <I>lambda-list [[<I>declaration</I><B>*</B> | <I>documentation</I>]] <I>form</I><B>*</B></I> => <I><I>function</I></I><P>
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<P>
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<P><B>Arguments and Values:</B><P>
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<P>
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<I>lambda-list</I>---an <A REL=DEFINITION HREF="26_glo_o.htm#ordinary_lambda_list"><I>ordinary lambda list</I></A>. <P>
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<I>declaration</I>---a <A REL=DEFINITION HREF="s_declar.htm#declare"><B>declare</B></A> <A REL=DEFINITION HREF="26_glo_e.htm#expression"><I>expression</I></A>; not evaluated. <P>
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<I>documentation</I>---a <A REL=DEFINITION HREF="26_glo_s.htm#string"><I>string</I></A>; not evaluated. <P>
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<I>form</I>---a <A REL=DEFINITION HREF="26_glo_f.htm#form"><I>form</I></A>. <P>
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<I>function</I>---a <A REL=DEFINITION HREF="26_glo_f.htm#function"><I>function</I></A>. <P>
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<P><B>Description:</B><P>
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<P>
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Provides a shorthand notation for a <A REL=DEFINITION HREF="s_fn.htm#function"><B>function</B></A> <A REL=DEFINITION HREF="26_glo_s.htm#special_form"><I>special form</I></A> involving a <A REL=DEFINITION HREF="26_glo_l.htm#lambda_expression"><I>lambda expression</I></A> such that: <P>
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<PRE>
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(lambda lambda-list </TT>[[<TT></TT><I>declaration</I><TT></TT><B>*</B><TT> </TT>|<TT> </TT><I>documentation</I><TT></TT>]]<TT> form*)
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== (function (lambda lambda-list </TT>[[<TT></TT><I>declaration</I><TT></TT><B>*</B><TT> </TT>|<TT> </TT><I>documentation</I><TT></TT>]]<TT> form*))
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== #'(lambda lambda-list </TT>[[<TT></TT><I>declaration</I><TT></TT><B>*</B><TT> </TT>|<TT> </TT><I>documentation</I><TT></TT>]]<TT> form*)
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</PRE>
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</TT> <P>
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<P><B>Examples:</B><P>
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<P>
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<PRE>
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(funcall (lambda (x) (+ x 3)) 4) => 7
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</PRE>
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</TT> <P>
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<P><B>Side Effects:</B> None.
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<P>
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<P><B>Affected By:</B> None.
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<P>
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<P><B>Exceptional Situations:</B> None.
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<P>
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<P><B>See Also:</B><P>
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<P>
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<A REL=DEFINITION HREF="a_lambda.htm#lambda"><B>lambda</B></A> (symbol) <P>
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<P><B>Notes:</B><P>
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<P>
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This macro could be implemented by: <P>
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<PRE>
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(defmacro lambda (&whole form &rest bvl-decls-and-body)
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(declare (ignore bvl-decls-and-body))
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`#',form)
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</PRE>
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</TT> <P>
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